I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
labeled labelled libeled libelled labellate labelloid lowballed lability labiality liability
libeled labeled bled baled dabbled rebelled pebbled nibbled libelled bield blued belied quibbled gobbled gabelled labelled doubled wabbled kibbled belled bleed nobbled mobled dibbled rubbled babbled rabbled bobbled bubbled gabbled tabled abled gabled cobbled cabled hobbled fabled wobbled
label labella labile liable libel libelee libellee lobelia flabella glabella glabellae